:root{
  --cyan:#0bb8cf;--cyan-l:#5fd6e8;--cyan-bg:#e5f7fa;--cyan-bd:#bfe9ef;
  --ink:#122b33;--sub:#5b6f78;--bg:#f4f9fa;--card:#fff;--line:#e3edf0;
  --dark:#08252c;--dark2:#0d3540;--warn:#e8862f;--ok:#1fae6e;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶栏 ===== */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;height:62px;gap:34px}
.brand{display:flex;align-items:center;gap:12px;cursor:pointer}
.logo{width:40px;height:40px;object-fit:contain;display:block}
.brand .bt b{display:block;font-size:17px;letter-spacing:2px}
.brand .bt i{display:block;font-style:normal;font-size:9px;color:var(--cyan);letter-spacing:0;white-space:nowrap;text-align:justify;text-align-last:justify}
nav{display:flex;gap:6px;margin-left:auto}
nav a{padding:8px 14px;border-radius:8px;color:var(--sub);font-size:14px;cursor:pointer}
nav a:hover{background:var(--cyan-bg);color:var(--ink)}
nav a.on{background:var(--cyan-bg);color:var(--cyan);font-weight:600}
.cart-btn{position:relative;background:var(--cyan);color:#fff !important;font-weight:600}
.cart-btn .n{position:absolute;top:-6px;right:-6px;background:var(--warn);color:#fff;font-size:11px;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 4px}

/* ===== 首页 Hero ===== */
.hero{background:linear-gradient(160deg,#07222a 0%,var(--dark2) 55%,#0a4a58 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% 20%,rgba(11,184,207,.25),transparent 70%),radial-gradient(500px 260px at 10% 90%,rgba(14,134,201,.18),transparent 70%)}
.hero .hlogo{position:absolute;right:6%;top:56px;width:140px;opacity:.45;pointer-events:none}
@media (max-width:600px){.hero .hlogo{width:84px;top:34px;opacity:.35}}
.hero .wrap{position:relative}
.hero .tag{display:inline-block;padding:5px 14px;border:1px solid rgba(95,214,232,.45);border-radius:20px;color:var(--cyan-l);font-size:13px;letter-spacing:2px}
.hero h1{font-size:40px;margin:20px 0 10px;letter-spacing:2px}
.hero h1 em{font-style:normal;color:var(--cyan-l)}
.hero p{color:#9fc4cd;font-size:15px;line-height:1.9;max-width:640px}
.search{margin-top:30px;display:flex;max-width:620px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.search input{flex:1;border:0;outline:0;padding:15px 18px;font-size:15px}
.search button{border:0;background:var(--cyan);color:#fff;padding:0 30px;font-size:15px;cursor:pointer;letter-spacing:2px}
.stats{display:flex;gap:0;margin-top:44px}
.stat{padding:0 34px;border-left:1px solid rgba(255,255,255,.16)}
.stat:first-child{padding-left:0;border-left:0}
.stat b{font-size:30px;color:var(--cyan-l);font-weight:700}
.stat span{display:block;margin-top:4px;color:#9fc4cd;font-size:13px}

/* ===== 通用区块 ===== */
.sec{padding:52px 0 8px}
.sec-hd{display:flex;align-items:baseline;margin-bottom:22px}
.sec-hd h2{font-size:22px;letter-spacing:1px}
.sec-hd .en{margin-left:12px;color:#9fb3ba;font-size:12px;letter-spacing:1px}
.sec-hd a{margin-left:auto;color:var(--cyan);font-size:13px;cursor:pointer}

/* 行业卡 */
.inds{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.ind-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;cursor:pointer;transition:.2s}
.ind-card:hover{border-color:var(--cyan);box-shadow:0 8px 24px rgba(11,184,207,.14);transform:translateY(-2px)}
.ind-card .ic{font-size:24px}
.ind-card b{display:block;margin:10px 0 4px;font-size:16px}
.ind-card span{color:var(--sub);font-size:12.5px}
.ind-card .go{margin-top:12px;color:var(--cyan);font-size:12.5px;font-weight:600}

/* 演示视频（按行业分组） */
.demo-ind{margin-bottom:26px}
.demo-ind-t{font-size:15.5px;font-weight:600;margin-bottom:12px;padding-left:10px;border-left:3px solid var(--cyan)}
.demo-ind-t span{margin-left:10px;color:var(--ok);font-size:12px;font-weight:600}
.demos{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.demo-card{background:var(--dark);border-radius:14px;overflow:hidden;cursor:pointer;position:relative;aspect-ratio:16/9}
.demo-card img{width:100%;height:100%;object-fit:cover;opacity:.92;display:block}
.demo-card .tt{position:absolute;left:0;right:0;bottom:0;padding:22px 12px 10px;background:linear-gradient(transparent,rgba(4,20,25,.9));color:#fff;font-size:13.5px;font-weight:600}
.demo-card .bd{position:absolute;top:8px;right:8px;background:rgba(11,184,207,.9);color:#fff;font-size:11px;padding:2px 8px;border-radius:10px}
.demo-card .bd.real{background:rgba(31,174,110,.92)}
.demo-card .play{position:absolute;top:50%;left:50%;transform:translate(-50%,-60%);width:44px;height:44px;border-radius:50%;background:rgba(11,184,207,.85);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.demo-card video{width:100%;height:100%;object-fit:cover;display:block}

/* ===== 目录页 ===== */
.cat-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:22px 0 6px}
.cat-bar select,.cat-bar input{padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:13.5px;color:var(--ink);outline:0}
.cat-bar input{width:230px}
.cat-bar select:focus,.cat-bar input:focus{border-color:var(--cyan)}
.cat-bar .cnt{margin-left:auto;color:var(--sub);font-size:13px}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px;padding-bottom:40px}
.sc-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;cursor:pointer;transition:.15s;display:flex;flex-direction:column}
.sc-card:hover{border-color:var(--cyan);box-shadow:0 6px 20px rgba(11,184,207,.12)}
.sc-top{display:flex;align-items:center;gap:8px}
.sc-top .pill{font-size:11px;padding:3px 9px;border-radius:10px;background:var(--cyan-bg);color:#0a92a5}
.sc-top .pill.tk{background:#eef3fd;color:#4a6fd4}
.sc-card b.t{display:block;margin:12px 0 4px;font-size:15.5px}
.sc-card .memo{color:var(--sub);font-size:12.5px;min-height:32px}
.sc-price{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);display:flex;flex-wrap:wrap;gap:6px 14px}
.sc-price span{font-size:12px;color:var(--sub)}
.sc-price b{color:var(--cyan);font-weight:600;font-size:12.5px}
.sc-foot{display:flex;align-items:center;margin-top:10px;gap:8px}
.sc-foot .demo-flag{color:var(--ok);font-size:12px;font-weight:600}
.sc-foot .sku-n{margin-left:auto;color:#9fb3ba;font-size:11.5px}
.empty{text-align:center;color:var(--sub);padding:60px 0}

/* ===== 场景详情弹层 ===== */
.mask{position:fixed;inset:0;background:rgba(7,26,32,.55);z-index:90;display:none;align-items:flex-start;justify-content:center;overflow:auto;padding:40px 16px}
.mask.show{display:flex}
.modal{background:#fff;border-radius:18px;max-width:960px;width:100%;overflow:hidden}
.md-hd{background:linear-gradient(135deg,var(--dark),var(--dark2));color:#fff;padding:22px 26px;display:flex;align-items:center}
.md-hd .tt b{font-size:19px;letter-spacing:1px}
.md-hd .tt span{display:block;color:#8fc3ce;font-size:12.5px;margin-top:5px}
.md-x{margin-left:auto;font-size:22px;cursor:pointer;color:#9fc4cd;padding:0 6px}
.md-bd{padding:22px 26px 28px;max-height:70vh;overflow:auto}
.demo-box{background:#04181d;border-radius:12px;overflow:hidden;margin-bottom:20px;max-width:560px}
.demo-box video{width:100%;display:block}
.demo-box .cap{padding:8px 12px;color:#7fb7c2;font-size:12px}
.md-sec{margin-top:18px}
.md-sec h4{font-size:15px;margin-bottom:10px;padding-left:9px;border-left:3px solid var(--cyan)}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tabs .tab{padding:7px 16px;border:1px solid var(--line);border-radius:20px;cursor:pointer;font-size:13px;color:var(--sub)}
.tabs .tab.on{background:var(--cyan);border-color:var(--cyan);color:#fff;font-weight:600}
table.price{width:100%;border-collapse:collapse;font-size:13px}
table.price th{background:var(--cyan-bg);color:#0a6a7a;font-weight:600;padding:9px 10px;text-align:left}
table.price td{padding:9px 10px;border-bottom:1px solid var(--line)}
table.price tr:hover td{background:#f7fdfe}
table.price .fm{font-weight:600}
table.price .u{color:var(--sub);font-size:11.5px;margin-left:5px}
table.price .amt{color:var(--cyan);font-weight:700;font-size:14.5px}
.add-btn{border:1px solid var(--cyan);background:#fff;color:var(--cyan);padding:5px 13px;border-radius:8px;cursor:pointer;font-size:12.5px;white-space:nowrap}
.add-btn:hover{background:var(--cyan);color:#fff}
.add-btn.ok{border-color:var(--ok);color:var(--ok)}
.add-btn.ok:hover{background:var(--ok);color:#fff}
.meta-row{display:flex;gap:26px;flex-wrap:wrap;color:var(--sub);font-size:13px;margin-top:14px}
.meta-row b{color:var(--ink)}

/* ===== 询价抽屉 ===== */
.drawer{position:fixed;top:0;right:-420px;width:400px;height:100%;background:#fff;z-index:100;box-shadow:-8px 0 30px rgba(0,0,0,.18);transition:right .25s;display:flex;flex-direction:column}
.drawer.show{right:0}
.dr-hd{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center}
.dr-hd b{font-size:16px}
.dr-x{margin-left:auto;cursor:pointer;font-size:20px;color:var(--sub)}
.dr-bd{flex:1;overflow:auto;padding:14px 20px}
.dr-item{border:1px solid var(--line);border-radius:11px;padding:12px 14px;margin-bottom:10px}
.dr-item b{font-size:13.5px;display:block}
.dr-item .s{color:var(--sub);font-size:12px;margin-top:4px}
.dr-item .fm{color:var(--cyan);font-weight:600;font-size:12.5px;margin-top:6px}
.dr-item .del{float:right;color:#c66;cursor:pointer;font-size:12px}
.dr-ft{border-top:1px solid var(--line);padding:16px 20px}
.dr-ft .hint{color:var(--sub);font-size:12px;line-height:1.7;margin-bottom:12px}
.btn{display:block;width:100%;border:0;border-radius:10px;padding:12px;font-size:14.5px;cursor:pointer;text-align:center}
.btn.main{background:var(--cyan);color:#fff;font-weight:600;letter-spacing:1px}
.btn.main:hover{background:#0aa2b8}
.btn.ghost{background:#fff;border:1px solid var(--cyan);color:var(--cyan);margin-top:9px}
.inq-result{background:var(--cyan-bg);border:1px solid var(--cyan-bd);border-radius:10px;padding:12px;font-size:12px;white-space:pre-wrap;font-family:Consolas,monospace;margin-top:12px;max-height:180px;overflow:auto}

/* 页脚 */
footer{background:var(--dark);color:#7fa8b2;margin-top:50px;padding:34px 0;font-size:13px}
footer .wrap{display:flex;gap:40px;flex-wrap:wrap}
footer b{color:#cfe9ee;display:block;margin-bottom:8px;letter-spacing:1px}
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:var(--dark);color:#fff;padding:11px 22px;border-radius:24px;font-size:13.5px;z-index:200;opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1}
@media (max-width:900px){
  .inds,.demos{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:28px}
  .stat{padding:0 18px}
  .stat b{font-size:22px}
}
@media (max-width:600px){
  .inds,.demos,.scene-grid{grid-template-columns:1fr}
  nav a:not(.cart-btn){display:none}
  .hero{padding:40px 0 36px}
  .hero h1{font-size:23px;letter-spacing:1px}
  .hero p{font-size:13.5px}
  .search input{padding:13px 14px;font-size:14px}
  .search button{padding:0 18px;font-size:14px;letter-spacing:1px}
  .stats{flex-wrap:wrap;gap:18px 0;margin-top:30px}
  .stat{padding:0 18px}
  .stat b{font-size:20px}
  .stat:nth-child(1){padding-left:0}
  .sec{padding:36px 0 4px}
  .sec-hd h2{font-size:18px}
  .cat-bar select,.cat-bar input{flex:1 1 45%;width:auto}
  .table-wrap{overflow-x:auto}
  table.price{min-width:560px}
  .mask{padding:14px 8px}
  .md-hd{padding:16px 16px}
  .md-hd .tt b{font-size:16px}
  .md-bd{padding:16px 14px 22px;max-height:76vh}
  .meta-row{gap:10px;flex-direction:column}
  .drawer{width:100%;right:-100%}
  .demo-box{max-width:100%}
}